mirror of https://github.com/ZDoom/gzdoom-gles.git
352 lines
7.7 KiB
C++
352 lines
7.7 KiB
C++
/* $Id: main.cc 691 2007-04-22 15:07:39Z helly $ */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#elif defined(_WIN32)
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#include "config_w32.h"
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#endif
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#include <fstream>
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#include <iostream>
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#include <stdlib.h>
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#include <string.h>
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#include "globals.h"
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#include "parser.h"
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#include "dfa.h"
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#include "mbo_getopt.h"
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namespace re2c
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{
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file_info sourceFileInfo;
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file_info outputFileInfo;
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bool bFlag = false;
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bool dFlag = false;
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bool eFlag = false;
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bool fFlag = false;
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bool gFlag = false;
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bool iFlag = false;
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bool sFlag = false;
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bool uFlag = false;
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bool wFlag = false;
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bool bNoGenerationDate = false;
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bool bSinglePass = false;
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bool bFirstPass = true;
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bool bLastPass = false;
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bool bUsedYYAccept = false;
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bool bUsedYYMaxFill = false;
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bool bUsedYYMarker = true;
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bool bUseStartLabel = false;
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bool bUseStateNext = false;
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bool bUseYYFill = true;
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bool bUseYYFillParam = true;
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std::string startLabelName;
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std::string labelPrefix("yy");
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std::string yychConversion("");
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uint maxFill = 1;
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uint next_label = 0;
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uint cGotoThreshold = 9;
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uint topIndent = 0;
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std::string indString("\t");
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bool yybmHexTable = false;
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bool bUseStateAbort = false;
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bool bWroteGetState = false;
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uint nRealChars = 256;
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uint next_fill_index = 0;
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uint last_fill_index = 0;
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std::set<uint> vUsedLabels;
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re2c::CodeNames mapCodeName;
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free_list<RegExp*> RegExp::vFreeList;
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free_list<Range*> Range::vFreeList;
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using namespace std;
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static char *opt_arg = NULL;
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static int opt_ind = 1;
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static const mbo_opt_struct OPTIONS[] =
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{
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mbo_opt_struct('?', 0, "help"),
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mbo_opt_struct('b', 0, "bit-vectors"),
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mbo_opt_struct('d', 0, "debug-output"),
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mbo_opt_struct('e', 0, "ecb"),
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mbo_opt_struct('f', 0, "storable-state"),
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mbo_opt_struct('g', 0, "computed-gotos"),
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mbo_opt_struct('h', 0, "help"),
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mbo_opt_struct('i', 0, "no-debug-info"),
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mbo_opt_struct('o', 1, "output"),
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mbo_opt_struct('s', 0, "nested-ifs"),
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mbo_opt_struct('u', 0, "unicode"),
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mbo_opt_struct('v', 0, "version"),
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mbo_opt_struct('V', 0, "vernum"),
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mbo_opt_struct('w', 0, "wide-chars"),
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mbo_opt_struct('1', 0, "single-pass"),
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mbo_opt_struct(10, 0, "no-generation-date"),
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mbo_opt_struct('-', 0, NULL) /* end of args */
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};
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static void usage()
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{
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cerr << "usage: re2c [-bdefghisvVw1] [-o file] file\n"
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"\n"
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"-? -h --help Display this info.\n"
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"\n"
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"-b --bit-vectors Implies -s. Use bit vectors as well in the attempt to\n"
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" coax better code out of the compiler. Most useful for\n"
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" specifications with more than a few keywords (e.g. for\n"
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" most programming languages).\n"
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"\n"
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"-d --debug-output Creates a parser that dumps information during\n"
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" about the current position and in which state the\n"
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" parser is.\n"
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"\n"
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"-e --ecb Cross-compile from an ASCII platform to\n"
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" an EBCDIC one.\n"
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"\n"
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"-f --storable-state Generate a scanner that supports storable states.\n"
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"\n"
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"-g --computed-gotos Implies -b. Generate computed goto code (only useable\n"
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" with gcc).\n"
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"\n"
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"-i --no-debug-info Do not generate '#line' info (usefull for versioning).\n"
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"\n"
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"-o --output=output Specify the output file instead of stdout\n"
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" This cannot be used together with -e switch.\n"
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"\n"
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"-s --nested-ifs Generate nested ifs for some switches. Many compilers\n"
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" need this assist to generate better code.\n"
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"\n"
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"-u --unicode Implies -w but supports the full Unicode character set.\n"
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"\n"
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"-v --version Show version information.\n"
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"\n"
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"-V --vernum Show version as one number.\n"
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"\n"
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"-w --wide-chars Create a parser that supports wide chars (UCS-2). This\n"
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" implies -s and cannot be used together with -e switch.\n"
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"\n"
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"-1 --single-pass Force single pass generation, this cannot be combined\n"
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" with -f and disables YYMAXFILL generation prior to last\n"
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" re2c block.\n"
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"\n"
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"--no-generation-date Suppress date output in the generated output so that it\n"
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" only shows the re2c version.\n"
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;
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}
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} // end namespace re2c
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using namespace re2c;
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int main(int argc, char *argv[])
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{
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int c;
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const char *sourceFileName = 0;
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const char *outputFileName = 0;
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if (argc == 1)
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{
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usage();
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return 2;
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}
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while ((c = mbo_getopt(argc, argv, OPTIONS, &opt_arg, &opt_ind, 0)) != -1)
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{
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switch (c)
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{
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case 'b':
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bFlag = true;
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sFlag = true;
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break;
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case 'e':
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xlat = asc2ebc;
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talx = ebc2asc;
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eFlag = true;
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break;
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case 'd':
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dFlag = true;
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break;
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case 'f':
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fFlag = true;
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break;
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case 'g':
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gFlag = true;
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bFlag = true;
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sFlag = true;
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break;
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case 'i':
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iFlag = true;
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break;
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case 'o':
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outputFileName = opt_arg;
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break;
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case 's':
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sFlag = true;
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break;
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case '1':
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bSinglePass = true;
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break;
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case 'v':
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cout << "re2c " << PACKAGE_VERSION << "\n";
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return 2;
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case 'V': {
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string vernum(PACKAGE_VERSION);
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if (vernum[1] == '.')
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{
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vernum.insert(0, "0");
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}
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vernum.erase(2, 1);
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if (vernum[3] == '.')
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{
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vernum.insert(2, "0");
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}
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vernum.erase(4, 1);
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if (vernum.length() < 6 || vernum[5] < '0' || vernum[5] > '9')
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{
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vernum.insert(4, "0");
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}
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vernum.resize(6);
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cout << vernum << endl;
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return 2;
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}
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case 'w':
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nRealChars = (1<<16); /* 0x10000 */
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sFlag = true;
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wFlag = true;
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break;
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case 'u':
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nRealChars = 0x110000; /* 17 times w-Flag */
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sFlag = true;
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uFlag = true;
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break;
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case 'h':
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case '?':
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default:
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usage();
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return 2;
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case 10:
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bNoGenerationDate = true;
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break;
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}
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}
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if ((bFlag || fFlag) && bSinglePass) {
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std::cerr << "re2c: error: Cannot combine -1 and -b or -f switch\n";
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return 1;
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}
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if (wFlag && eFlag)
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{
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std::cerr << "re2c: error: Cannot combine -e with -w or -u switch\n";
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return 2;
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}
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if (wFlag && uFlag)
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{
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std::cerr << "re2c: error: Cannot combine -u with -w switch\n";
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return 2;
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}
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if (uFlag)
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{
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wFlag = true;
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}
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if (argc == opt_ind + 1)
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{
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sourceFileName = argv[opt_ind];
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}
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else
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{
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usage();
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return 2;
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}
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// set up the source stream
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re2c::ifstream_lc source;
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if (sourceFileName[0] == '-' && sourceFileName[1] == '\0')
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{
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if (fFlag)
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{
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std::cerr << "re2c: error: multiple /*!re2c stdin is not acceptable when -f is specified\n";
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return 1;
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}
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sourceFileName = "<stdin>";
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source.open(stdin);
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}
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else if (!source.open(sourceFileName).is_open())
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{
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cerr << "re2c: error: cannot open " << sourceFileName << "\n";
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return 1;
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}
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// set up the output stream
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re2c::ofstream_lc output;
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if (outputFileName == 0 || (sourceFileName[0] == '-' && sourceFileName[1] == '\0'))
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{
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outputFileName = "<stdout>";
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output.open(stdout);
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}
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else if (!output.open(outputFileName).is_open())
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{
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cerr << "re2c: error: cannot open " << outputFileName << "\n";
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return 1;
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}
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Scanner scanner(sourceFileName, source, output);
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sourceFileInfo = file_info(sourceFileName, &scanner);
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outputFileInfo = file_info(outputFileName, &output);
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if (!bSinglePass)
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{
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bUsedYYMarker = false;
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re2c::ifstream_lc null_source;
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if (!null_source.open(sourceFileName).is_open())
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{
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cerr << "re2c: error: cannot re-open " << sourceFileName << "\n";
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return 1;
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}
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null_stream null_dev;
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Scanner null_scanner(sourceFileName, null_source, null_dev);
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parse(null_scanner, null_dev);
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next_label = 0;
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next_fill_index = 0;
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bWroteGetState = false;
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bUsedYYMaxFill = false;
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bFirstPass = false;
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}
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bLastPass = true;
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parse(scanner, output);
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return 0;
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}
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